A Good Samaritan died trying to protect a teenager during a suspected machete attack at a train station in Melbourne’s north-east. 

Emergency services were called to Bridge Inn Road in Mernda about 5.50pm on Friday after reports of a group of people fighting. 

A 22-year-old man, from the suburb, was found with life-threatening injuries.

He was treated by paramedics but died at the scene.

The man has been described as a ‘Good Samaritan’ who tried to intervene after he saw a group of teenagers assaulting someone, the Herald Sun reports.

Footage obtained by the publication revealed what appeared to be a machete, or a machete sheath, left at the scene. 

Police arrested four people following the incident: a 16-year-old, 18-year-old and two 17-year-olds who all remain in custody. 

The circumstances surrounding the incident are currently being investigated.

A 22-year-old man was found dead near Mernda railway station on Friday evening

He allegedly stepped in to help a teenager who is understood to have been pursued by a group

Victoria’s Shadow Minister for Police and Corrections Brad Battin called for the state government to address the incident.

‘Labor MUST see the crisis now,’ he wrote on social media on Saturday afternoon.

‘Last night there was an alleged murder – a crime scene is set up outside a Labor MPs office.

‘They can’t ignore the crime crisis. We need more police, stronger sentencing and safer communities. Urgently.’

The Daily Mail has contacted the Allan government for comment.

Metro Trains suspended services between South Morang and Mernda stations after a ‘police request’, following the death on Saturday. 

Passengers were told to expect delays as buses ran replacement services.

Clean-up efforts were still underway on Saturday morning, with biohazard cleaners using power washers to clean the pavement.

Anyone who witnessed the incident or has footage has been urged to contact Crime Stoppers on 1800 333 000.